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Anisotropic Neutrino Emission from Spinning, Moving, and Charged Primordial Black Holes
Arnab Chaudhuri
The angular and spectral features of neutrinos emitted from primordial black holes (PBHs) carry key imprints of the black hole's fundamental properties. This work investigates the…
Gravitational Wave Signatures of Breaking and Right-Handed Neutrino Dynamics
Arnab Chaudhuri, Priya Mishra, Rukmani Mohanta
The Standard Model (SM) leaves several fundamental questions unanswered, including the origin of neutrino masses, the baryon asymmetry of the Universe, and the nature of dark matte…
Directional Neutrino Bursts from Spinning and Moving Primordial Black Holes
Arnab Chaudhuri, Priya Mishra, Rukmani Mohanta
We show that primordial black holes (PBHs) with significant spin and bulk motion produce sharply collimated neutrino bursts from Hawking evaporation, arising from the interplay of…
New bounds on Memory Burdened Primordial Black Holes from Big Bang Nucleosynthesis
Arnab Chaudhuri, Kazunori Kohri, Valentin Thoss
Primordial black holes (PBHs) with masses below are typically assumed to have negligible cosmological impact due to their rapid evaporation via Hawking radiation. Ho…
Neutrino Portal to Extra Dimensions: Unified Origin of Dark Radiation, Dark Matter, and Neutrino Decay
Arnab Chaudhuri
We propose a unified framework based on sterile neutrinos propagating in large extra dimensions (LED) and coupled to a pseudo-Nambu-Goldstone boson (Majoron) arising from spontaneo…
Neutrino Fluence influenced by Memory Burdened Primordial Black Holes
Arnab Chaudhuri, Koushik Pal, Rukmani Mohanta
We study the impact of quantum gravitational memory burden - a backreaction effect that suppresses black hole evaporation - on neutrino signals from primordial black holes (PBHs).…